DhcpServerQueryAttributes

// DHCPSAPI.dll
#include <windows.h>

DWORD DhcpServerQueryAttributes(
    LPWSTR ServerIpAddr,   // optional
    DWORD dwReserved,
    DWORD dwAttribCount,
    DWORD* pDhcpAttribs,
    DHCP_ATTRIB_ARRAY** pDhcpAttribArr
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpServerQueryAttributes(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddr As String,   ' LPWSTR optional
    dwReserved As UInteger,   ' DWORD
    dwAttribCount As UInteger,   ' DWORD
    ByRef pDhcpAttribs As UInteger,   ' DWORD* in/out
    pDhcpAttribArr As IntPtr   ' DHCP_ATTRIB_ARRAY** in/out
) As UInteger
End Function

' ServerIpAddr : LPWSTR optional
' dwReserved : DWORD
' dwAttribCount : DWORD
' pDhcpAttribs : DWORD* in/out
' pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out
Declare PtrSafe Function DhcpServerQueryAttributes Lib "dhcpsapi" ( _
    ByVal ServerIpAddr As LongPtr, _
    ByVal dwReserved As Long, _
    ByVal dwAttribCount As Long, _
    ByRef pDhcpAttribs As Long, _
    ByVal pDhcpAttribArr As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DhcpServerQueryAttributes = ctypes.windll.dhcpsapi.DhcpServerQueryAttributes
DhcpServerQueryAttributes.restype = wintypes.DWORD
DhcpServerQueryAttributes.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddr : LPWSTR optional
    wintypes.DWORD,  # dwReserved : DWORD
    wintypes.DWORD,  # dwAttribCount : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pDhcpAttribs : DWORD* in/out
    ctypes.c_void_p,  # pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpServerQueryAttributes = Fiddle::Function.new(
  lib['DhcpServerQueryAttributes'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddr : LPWSTR optional
    -Fiddle::TYPE_INT,  # dwReserved : DWORD
    -Fiddle::TYPE_INT,  # dwAttribCount : DWORD
    Fiddle::TYPE_VOIDP,  # pDhcpAttribs : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpServerQueryAttributes(
        ServerIpAddr: *mut u16,  // LPWSTR optional
        dwReserved: u32,  // DWORD
        dwAttribCount: u32,  // DWORD
        pDhcpAttribs: *mut u32,  // DWORD* in/out
        pDhcpAttribArr: *mut *mut DHCP_ATTRIB_ARRAY  // DHCP_ATTRIB_ARRAY** in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpServerQueryAttributes([MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddr, uint dwReserved, uint dwAttribCount, ref uint pDhcpAttribs, IntPtr pDhcpAttribArr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpServerQueryAttributes' -Namespace Win32 -PassThru
# $api::DhcpServerQueryAttributes(ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr)

#uselib "DHCPSAPI.dll"
#func global DhcpServerQueryAttributes "DhcpServerQueryAttributes" sptr, sptr, sptr, sptr, sptr
; DhcpServerQueryAttributes ServerIpAddr, dwReserved, dwAttribCount, varptr(pDhcpAttribs), varptr(pDhcpAttribArr)   ; 戻り値は stat
; ServerIpAddr : LPWSTR optional -> "sptr"
; dwReserved : DWORD -> "sptr"
; dwAttribCount : DWORD -> "sptr"
; pDhcpAttribs : DWORD* in/out -> "sptr"
; pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	dhcpsapi = windows.NewLazySystemDLL("DHCPSAPI.dll")
	procDhcpServerQueryAttributes = dhcpsapi.NewProc("DhcpServerQueryAttributes")
)

// ServerIpAddr (LPWSTR optional), dwReserved (DWORD), dwAttribCount (DWORD), pDhcpAttribs (DWORD* in/out), pDhcpAttribArr (DHCP_ATTRIB_ARRAY** in/out)
r1, _, err := procDhcpServerQueryAttributes.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddr))),
	uintptr(dwReserved),
	uintptr(dwAttribCount),
	uintptr(pDhcpAttribs),
	uintptr(pDhcpAttribArr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpServerQueryAttributes(
  ServerIpAddr: PWideChar;   // LPWSTR optional
  dwReserved: DWORD;   // DWORD
  dwAttribCount: DWORD;   // DWORD
  pDhcpAttribs: Pointer;   // DWORD* in/out
  pDhcpAttribArr: Pointer   // DHCP_ATTRIB_ARRAY** in/out
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpServerQueryAttributes';

result := DllCall("DHCPSAPI\DhcpServerQueryAttributes"
    , "WStr", ServerIpAddr   ; LPWSTR optional
    , "UInt", dwReserved   ; DWORD
    , "UInt", dwAttribCount   ; DWORD
    , "Ptr", pDhcpAttribs   ; DWORD* in/out
    , "Ptr", pDhcpAttribArr   ; DHCP_ATTRIB_ARRAY** in/out
    , "UInt")   ; return: DWORD

●DhcpServerQueryAttributes(ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr) = DLL("DHCPSAPI.dll", "dword DhcpServerQueryAttributes(char*, dword, dword, void*, void*)")
# 呼び出し: DhcpServerQueryAttributes(ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr)
# ServerIpAddr : LPWSTR optional -> "char*"
# dwReserved : DWORD -> "dword"
# dwAttribCount : DWORD -> "dword"
# pDhcpAttribs : DWORD* in/out -> "void*"
# pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。

const std = @import("std");

extern "dhcpsapi" fn DhcpServerQueryAttributes(
    ServerIpAddr: [*c]const u16, // LPWSTR optional
    dwReserved: u32, // DWORD
    dwAttribCount: u32, // DWORD
    pDhcpAttribs: [*c]u32, // DWORD* in/out
    pDhcpAttribArr: [*c][*c]DHCP_ATTRIB_ARRAY // DHCP_ATTRIB_ARRAY** in/out
) callconv(std.os.windows.WINAPI) u32;

proc DhcpServerQueryAttributes(
    ServerIpAddr: WideCString,  # LPWSTR optional
    dwReserved: uint32,  # DWORD
    dwAttribCount: uint32,  # DWORD
    pDhcpAttribs: ptr uint32,  # DWORD* in/out
    pDhcpAttribArr: ptr DHCP_ATTRIB_ARRAY  # DHCP_ATTRIB_ARRAY** in/out
): uint32 {.importc: "DhcpServerQueryAttributes", stdcall, dynlib: "DHCPSAPI.dll".}

pragma(lib, "dhcpsapi");
extern(Windows)
uint DhcpServerQueryAttributes(
    const(wchar)* ServerIpAddr,   // LPWSTR optional
    uint dwReserved,   // DWORD
    uint dwAttribCount,   // DWORD
    uint* pDhcpAttribs,   // DWORD* in/out
    DHCP_ATTRIB_ARRAY** pDhcpAttribArr   // DHCP_ATTRIB_ARRAY** in/out
);

ccall((:DhcpServerQueryAttributes, "DHCPSAPI.dll"), stdcall, UInt32,
      (Cwstring, UInt32, UInt32, Ptr{UInt32}, Ptr{DHCP_ATTRIB_ARRAY}),
      ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr)
# ServerIpAddr : LPWSTR optional -> Cwstring
# dwReserved : DWORD -> UInt32
# dwAttribCount : DWORD -> UInt32
# pDhcpAttribs : DWORD* in/out -> Ptr{UInt32}
# pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> Ptr{DHCP_ATTRIB_ARRAY}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t DhcpServerQueryAttributes(
    const uint16_t* ServerIpAddr,
    uint32_t dwReserved,
    uint32_t dwAttribCount,
    uint32_t* pDhcpAttribs,
    void* pDhcpAttribArr);
]]
local dhcpsapi = ffi.load("dhcpsapi")
-- dhcpsapi.DhcpServerQueryAttributes(ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr)
-- ServerIpAddr : LPWSTR optional
-- dwReserved : DWORD
-- dwAttribCount : DWORD
-- pDhcpAttribs : DWORD* in/out
-- pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('DHCPSAPI.dll');
const DhcpServerQueryAttributes = lib.func('__stdcall', 'DhcpServerQueryAttributes', 'uint32_t', ['str16', 'uint32_t', 'uint32_t', 'uint32_t *', 'void *']);
// DhcpServerQueryAttributes(ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr)
// ServerIpAddr : LPWSTR optional -> 'str16'
// dwReserved : DWORD -> 'uint32_t'
// dwAttribCount : DWORD -> 'uint32_t'
// pDhcpAttribs : DWORD* in/out -> 'uint32_t *'
// pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("DHCPSAPI.dll", {
  DhcpServerQueryAttributes: { parameters: ["buffer", "u32", "u32", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.DhcpServerQueryAttributes(ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr)
// ServerIpAddr : LPWSTR optional -> "buffer"
// dwReserved : DWORD -> "u32"
// dwAttribCount : DWORD -> "u32"
// pDhcpAttribs : DWORD* in/out -> "pointer"
// pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t DhcpServerQueryAttributes(
    const uint16_t* ServerIpAddr,
    uint32_t dwReserved,
    uint32_t dwAttribCount,
    uint32_t* pDhcpAttribs,
    void* pDhcpAttribArr);
C, "DHCPSAPI.dll");
// $ffi->DhcpServerQueryAttributes(ServerIpAddr, dwReserved, dwAttribCount, pDhcpAttribs, pDhcpAttribArr);
// ServerIpAddr : LPWSTR optional
// dwReserved : DWORD
// dwAttribCount : DWORD
// pDhcpAttribs : DWORD* in/out
// pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Dhcpsapi extends StdCallLibrary {
    Dhcpsapi INSTANCE = Native.load("dhcpsapi", Dhcpsapi.class);
    int DhcpServerQueryAttributes(
        WString ServerIpAddr,   // LPWSTR optional
        int dwReserved,   // DWORD
        int dwAttribCount,   // DWORD
        IntByReference pDhcpAttribs,   // DWORD* in/out
        Pointer pDhcpAttribArr   // DHCP_ATTRIB_ARRAY** in/out
    );
}

@[Link("dhcpsapi")]
lib LibDHCPSAPI
  fun DhcpServerQueryAttributes = DhcpServerQueryAttributes(
    ServerIpAddr : UInt16*,   # LPWSTR optional
    dwReserved : UInt32,   # DWORD
    dwAttribCount : UInt32,   # DWORD
    pDhcpAttribs : UInt32*,   # DWORD* in/out
    pDhcpAttribArr : DHCP_ATTRIB_ARRAY**   # DHCP_ATTRIB_ARRAY** in/out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef DhcpServerQueryAttributesNative = Uint32 Function(Pointer<Utf16>, Uint32, Uint32, Pointer<Uint32>, Pointer<Void>);
typedef DhcpServerQueryAttributesDart = int Function(Pointer<Utf16>, int, int, Pointer<Uint32>, Pointer<Void>);
final DhcpServerQueryAttributes = DynamicLibrary.open('DHCPSAPI.dll')
    .lookupFunction<DhcpServerQueryAttributesNative, DhcpServerQueryAttributesDart>('DhcpServerQueryAttributes');
// ServerIpAddr : LPWSTR optional -> Pointer<Utf16>
// dwReserved : DWORD -> Uint32
// dwAttribCount : DWORD -> Uint32
// pDhcpAttribs : DWORD* in/out -> Pointer<Uint32>
// pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function DhcpServerQueryAttributes(
  ServerIpAddr: PWideChar;   // LPWSTR optional
  dwReserved: DWORD;   // DWORD
  dwAttribCount: DWORD;   // DWORD
  pDhcpAttribs: Pointer;   // DWORD* in/out
  pDhcpAttribArr: Pointer   // DHCP_ATTRIB_ARRAY** in/out
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpServerQueryAttributes';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "DhcpServerQueryAttributes"
  c_DhcpServerQueryAttributes :: CWString -> Word32 -> Word32 -> Ptr Word32 -> Ptr () -> IO Word32
-- ServerIpAddr : LPWSTR optional -> CWString
-- dwReserved : DWORD -> Word32
-- dwAttribCount : DWORD -> Word32
-- pDhcpAttribs : DWORD* in/out -> Ptr Word32
-- pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let dhcpserverqueryattributes =
  foreign "DhcpServerQueryAttributes"
    ((ptr uint16_t) @-> uint32_t @-> uint32_t @-> (ptr uint32_t) @-> (ptr void) @-> returning uint32_t)
(* ServerIpAddr : LPWSTR optional -> (ptr uint16_t) *)
(* dwReserved : DWORD -> uint32_t *)
(* dwAttribCount : DWORD -> uint32_t *)
(* pDhcpAttribs : DWORD* in/out -> (ptr uint32_t) *)
(* pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library dhcpsapi (t "DHCPSAPI.dll"))
(cffi:use-foreign-library dhcpsapi)

(cffi:defcfun ("DhcpServerQueryAttributes" dhcp-server-query-attributes :convention :stdcall) :uint32
  (server-ip-addr (:string :encoding :utf-16le))   ; LPWSTR optional
  (dw-reserved :uint32)   ; DWORD
  (dw-attrib-count :uint32)   ; DWORD
  (p-dhcp-attribs :pointer)   ; DWORD* in/out
  (p-dhcp-attrib-arr :pointer))   ; DHCP_ATTRIB_ARRAY** in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DhcpServerQueryAttributes = Win32::API::More->new('DHCPSAPI',
    'DWORD DhcpServerQueryAttributes(LPCWSTR ServerIpAddr, DWORD dwReserved, DWORD dwAttribCount, LPVOID pDhcpAttribs, LPVOID pDhcpAttribArr)');
# my $ret = $DhcpServerQueryAttributes->Call($ServerIpAddr, $dwReserved, $dwAttribCount, $pDhcpAttribs, $pDhcpAttribArr);
# ServerIpAddr : LPWSTR optional -> LPCWSTR
# dwReserved : DWORD -> DWORD
# dwAttribCount : DWORD -> DWORD
# pDhcpAttribs : DWORD* in/out -> LPVOID
# pDhcpAttribArr : DHCP_ATTRIB_ARRAY** in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。